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| All Patents in class 220/4.22 | |||||
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| Number | Date | Patentee | Title | Type | |
| 150,752 | May 12, 1874 | I. Dunham | Improvement in Cooking Utensils | roasters | |
| 171,200 | Dec. 14, 1875 | W. Wachs | Baker and Roaster | roasters | |